US413559A

US413559A - Carriage-axle

Info

Publication number: US413559A
Authority: US
Publication date: 1889-10-22
Anticipated expiration: 1906-10-22

Description

(No Model.)

Q E. P. ROBBINS.

- CARRIAGE AXLE. NO. 413,559. Patented Oct. 22,1889.

WTNESEES. INVENTQFL UNITED STATES PATENT 1 OFFICE.

ELISHA F. ROBBINS, OF-OAMBRIDGE, ASSIGNOR TO THOMAS J. OLYS, OF BOSTON, MASSACHUSETTS.

CARRIAGE-AXLE.

SPECIFICATION forming part of Letters Patent No. 413,559, dated October 22, 1889. Application filed December 10, 1888- Serial No. 293,116. (No model.)

To all whom it may concern.-

Be it known that 1, ELISHA F. ROBBINS, of Cambridge, in'the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Carriage- Axles, of which the following is a specification. This invention relates to carriage-axles the spindles of which are provided with longitudinal anti-friction rollers to run in rolling contact with the axle-box. The invention consists in an axle-spindle having the main portion, which contains the said roller, made slightly offset from or eccentric to the end portions of the spindle, the extent to which said main portion is offset being equal to the extent of the projection of the anti-friction roller outside of the periphcry of the spindle at a point opposite said offset portion, so that the line of contact of the periphery of the anti-friction roll with the axle-box will be at the same distance from the axial center of said box as a line along the periphery of the spindle at a point diametrically opposite to the outer portion of the antifriction roll, while the end portions of the axle are concentric with the axial center of the box, all of which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure 1' represents a side View of an axle-spindle embodying my invention anda sectional view of the box. Fig. 2 represents a longitudinal section of the spindle, the roller being removed. Fig. 3 represents a longitudinal section'of the spindle and roller. Fig. 4 represents a section on line ,2 .2, Fig. 1. Fig. 5 represents a section on line 2' z, Fig. 3.

The same letters of reference indicate the same parts in all the figures.

In the drawings, or represents the spindle of a carriage-axle, the same being composed of the main portion 2, having a longitudinal groove or recess 1), in which are the bearings b of the anti-friction roll 0, and the end portions 3 4 at opposite ends of the main portion 2. The portion 3 at the inner end is a circular collar or enlargement formed on the spindle and closely fitting a cavity in the inner end of the axle-box g to act both as a stop to limit the inward movement of the box on the threaded to receive the nut 71., that retains the hub upon the spindle.

In carrying out my lnvention I make the main portion 2 of less than the diameter required to fill the axle-box and offset said porvtion from the end portions 3 4, the main portion being turned on a lathe while running on a center that is eccentric to the center on which the spindle rotates when the portions 3 4 are being turned. In other words, I turn the main portion 2 on one center and the end portions 3 4 on another center, so that while the main port-ions 3 4 have the same axial center, the main portion 2 has a diiferent center and is eccentric to the portions 3 4. The two centers are indicated in Fig. 1 by the dotted lines as w y y and in Fig. 4 by the letters as y.

The roller 0 projects outside of the portion 2 of the spindle, so that the lowest part of its periphery, which bears on the box 9, is atthe same distance from the line 00 .r, Fig. 1, as the highest part of the periphery of the portion 2, said highest and lowest parts bearing on the box at points diametrically opposite each other, as shown in Figs. 1 and 4. It will be seen, therefore, that the described eccentricity of the portion 2 and the projection of the roller 0 therefrom enable the portion 2 and its roller to fit snugly within a box which is concentric with the end portions 3 4, so that the box willl run easily on all parts of the spindle without binding on any part, and at the same time will fit all parts closely, so that there will be no rattling of the box on the axle and no admission of dirt between the bearing-surfaces The shoulder 7;, that connects the portion 2 with the enlargement 3, is beveled, as shown in Figs. 1 and 3,to increase the strength and prevent liability of breakage at this point.

To prevent the roller from dropping out when the box is removed from the spindle, I fit a segmental slide in a groove in the pe riphery of the portion 2, said slide being arranged to extend across one of the reduced portions or journals 0' of the roll 0, as shown in Fig. 5, and thereby hold the roll in place when the hub is removed. By sliding said plate back the roll may be released.

1. An axle-spindle composed of the end sections 3 et and the intermediate section 2, offset from or eccentric to the end sections, and provided with the anti-friction roller 0, which projects from the section 2, as described, comanti-friction roller in said recess, and the box which is concentric with the end sections and provided with an inner beveled shoulder, substantially as set forth.

3. An axle-spindle having a longitudinal recess, a roller c in said recess, and a segmental slide fitted in the periphery of the spindle and arranged to retain the roller in its recess, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 1st day of December, A. D. 1888.

ELISHA F. ROBBINS.

Vtitnesses:

0. F. BROWN, \V. O. RAMSAY.